使用Struts2+Hibernate开发学生信息管理功能
运行结果：
总共两个表，用户表Users和学生信息表Students。
项目内容：
其中com.scx.action包中包含
-
所有action动作的父类SuperAction
-
学生信息动作类StudentsAction
-
用户动作类UsersAction
com.scx.entity包中包含
- 学生实体类Students
- 用户实体类Users
- Students对象关系映射文件Students.hbm.xml
- Users对象关系映射文件Users.hbm.xml
com.scx.service包中包含
- 学生业务逻辑接口StudentsDao
- 用户业务逻辑接口UsersDao
com.scx.service.impl包中包含
- 用户业务逻辑接口StudentsDao对应的实现类StudentsDaoImpl
- 用户业务逻辑接口UsersDao对应的实现类UsersDaoImpl
com.scx.util包中包含
- HibernateSessionFactory类，一个单例模式返回SessionFactory对象
test文件夹 主要是junit测试内容
代码展示：
Students实体类
package com.scx.entity;
import java.util.Date;
//学生实体类
public class Students {
private String sid;//学号
private String sname;//姓名
private String gender;//性别
private Date birthday;//出生日期
private String address;//地址
public Students() {
}
public Students(String sid, String sname, String gender, Date birthday,
String address) {
this.sid = sid;
this.sname = sname;
this.gender = gender;
this.birthday = birthday;
this.address = address;
}
public String getSid() {
return sid;
}
public void setSid(String sid) {
this.sid = sid;
}
public String getSname() {
return sname;
}
public void setSname(String sname) {
this.sname = sname;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
package com.scx.entity;
public class Users {
private int uid;//主键id
private String username;//用户名
private String password;//密码
public Users(int uid, String username, String password) {
this.uid = uid;
this.username = username;
this.password = password;
}
public Users() {
}
public int getUid() {
return uid;
}
public void setUid(int uid) {
this.uid = uid;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
org.hibernate.dialect.MySQLDialect
jdbc:mysql://localhost:3306/susu
root
123
com.mysql.jdbc.Driver
susu
update
true
thread
用户业务逻辑接口
package com.scx.service;
import com.scx.entity.Users;
//用户业务逻辑接口
public interface UsersDao {
//用户登录操作
public boolean usersLogin(Users user);
}
package com.scx.service;
import java.util.List;
import com.scx.entity.Students;
//学生业务逻辑接口
public interface StudentsDao {
//查询所有学生信息
public List queryAllStudents();
//根据学号查询学生信息
public Students queryStudentsBySid(String sid);
//根据学号删除学生
public boolean deleteStudentsBySid(String sid);
//添加学生
public boolean addStudents(Students stu);
//更新学生信息
public boolean updateStudent(Students stu);
}
package com.scx.service.impl;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import com.scx.entity.Students;
import com.scx.entity.Users;
import com.scx.service.UsersDao;
import com.scx.util.HibernateSessionFactory;
public class UsersDaoImpl implements UsersDao {
//用户登录操作
@SuppressWarnings("unchecked")
public boolean usersLogin(Users user) {
Transaction transaction = null;
String hql = "";
try {
Session session = HibernateSessionFactory.getSessionFactory()
.getCurrentSession();
transaction = session.beginTransaction();
hql = "from Users where username = ? and password = ?";
Query query = session.createQuery(hql);
query.setParameter(0, user.getUsername());
query.setParameter(1, user.getPassword());
List list = query.list();
transaction.commit();
if (list.size() > 0 && list != null) {
return true;
}
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
if (transaction != null) {
transaction = null;
}
}
return false;
}
}
在添加学生时 为学生获取一个最新的学号。
package com.scx.service.impl;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import com.scx.entity.Students;
import com.scx.service.StudentsDao;
import com.scx.util.HibernateSessionFactory;
public class StudentsDaoImpl implements StudentsDao{
//查询所有的学生信息
@SuppressWarnings("unchecked")
public List queryAllStudents() {
List students=new ArrayList();
Transaction tc=null;
String hql="";
try{
Session session=HibernateSessionFactory.getSessionFactory().getCurrentSession();
tc=session.beginTransaction();
hql=" from Students";
Query query=session.createQuery(hql);
students=query.list();
tc.commit();
if(students.size()>0&&students!=null){
return students;
}else{
return null;
}
}catch(Exception e){
e.printStackTrace();
tc.commit();
return null;
}finally{
if(tc!=null){
tc=null;
}
}
}
//根据学号查询学生信息
public Students queryStudentsBySid(String sid) {
Students stu=null;
Transaction tc=null;
try{
Session session=HibernateSessionFactory.getSessionFactory().getCurrentSession();
tc=session.beginTransaction();
stu=(Students) session.get(Students.class, sid);
tc.commit();
return stu;
}catch(Exception e){
e.printStackTrace();
tc.commit();
return null;
}finally{
if(tc!=null){
tc=null;
}
}
}
//根据学号删除学生
public boolean deleteStudentsBySid(String sid) {
Transaction tc=null;
Session session=null;
try{
session=HibernateSessionFactory.getSessionFactory().getCurrentSession();
tc=session.beginTransaction();
Students stu=(Students) session.get(Students.class, sid);
session.delete(stu);
tc.commit();
return true;
}catch(Exception e){
e.printStackTrace();
tc.commit();
return false;
}finally{
if(tc!=null){
tc=null;
}
}
}
//添加学生
public boolean addStudents(Students stu) {
Transaction tc=null;;
try{
stu.setSid(getNewSid());
Session sessin=HibernateSessionFactory.getSessionFactory().getCurrentSession();
tc=sessin.beginTransaction();
sessin.save(stu);
tc.commit();
return true;
}catch(Exception e){
tc.commit();
e.printStackTrace();
return false;
}finally{
if(tc!=null){
tc=null;
}
}
}
//获取新增学生的学号
private String getNewSid(){
String sid=null;
Transaction tc=null;
String hql="";
try{
//首先从数据库中读取最大的学号 然后拼装学号
Session session=HibernateSessionFactory.getSessionFactory().getCurrentSession();
tc=session.beginTransaction();
hql="select max(sid) from Students";
Query query=session.createQuery(hql);
String temp=(String) query.uniqueResult();
tc.commit();
if(temp==null||"".equals(temp.trim())){
sid="s00000001";
}else{
int x=Integer.parseInt(temp.substring(1));
System.out.println(x);
temp=String.valueOf(++x);
//拼装学号为8为 不够前面补0
while(temp.length()<8){
temp="0"+temp;
}
sid="s"+temp;
}
return sid;
}catch(Exception e){
tc.commit();
e.printStackTrace();
return sid;
}finally{
if(tc!=null){
tc=null;
}
}
}
//更新学生信息
public boolean updateStudent(Students stu) {
Transaction tc=null;
try{
Session session=HibernateSessionFactory.getSessionFactory().getCurrentSession();
tc=session.beginTransaction();
session.update(stu);
tc.commit();
return true;
}catch (Exception e) {
e.printStackTrace();
tc.commit();
return false;
}
}
}
所有action的父类SuperAction 类，为了获得常用的内置对象，采用耦合IOC方式注入属性。继承ActionSupport 并实现ServletRequestAware，ServletResponseAware，ServletContextAware 。获取相应的request,response,session，这样的话，每个继承SuperAction 的类都能够使用request，response，session
package com.scx.action;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import org.apache.struts2.util.ServletContextAware;
import com.opensymphony.xwork2.ActionSupport;
//所有action动作的父类
public class SuperAction extends ActionSupport implements ServletRequestAware,
ServletResponseAware, ServletContextAware {
/**
*
*/
private static final long serialVersionUID = 1L;
protected HttpServletRequest request;// 请求对象
protected HttpServletResponse response;// 响应对象
protected HttpSession session;// 会话对象
protected ServletContext context;//全局对象
public void setServletContext(ServletContext context) {
this.context = context;
}
public void setServletResponse(HttpServletResponse response) {
this.response = response;
}
public void setServletRequest(HttpServletRequest request) {
this.request = request;
this.session = this.request.getSession();
}
}
UsersAction类，继承SuperAction并实现ModelDriven
package com.scx.action;
import org.apache.struts2.interceptor.validation.SkipValidation;
import com.opensymphony.xwork2.ModelDriven;
import com.scx.entity.Users;
import com.scx.service.UsersDao;
import com.scx.service.impl.UsersDaoImpl;
/**
* @author scx
* 用户动作类
*/
public class UsersAction extends SuperAction implements ModelDriven{
/**
*
*/
private static final long serialVersionUID = 1L;
private Users user=new Users();
//用户登录动作
public String login(){
UsersDao dao=new UsersDaoImpl();
if(dao.usersLogin(user)){
session.setAttribute("loginUserName", user.getUsername());
return "login_success";
}else{
return "login_failure";
}
}
//用户退出动作 跳过验证
@SkipValidation
public String logout(){
if(session.getAttribute("loginUserName")!=null){
session.removeAttribute("loginUserName");
}
return "logout_success";
}
public Users getModel() {
return user;
}
@Override
public void validate() {
if(user.getUsername()==null||"".equals(user.getUsername().trim())){
this.addFieldError("usernameError", "请输入帐号");
}
if(user.getPassword().length()<6){
this.addFieldError("passwordError", "密码不少于6位");
}
}
}
StudentsAction类，继承SuperAction并实现ModelDriven
package com.scx.action;
import java.util.List;
import com.opensymphony.xwork2.ModelDriven;
import com.scx.entity.Students;
import com.scx.service.StudentsDao;
import com.scx.service.impl.StudentsDaoImpl;
/**
* @author scx
* 学生信息动作类
*/
public class StudentsAction extends SuperAction implements ModelDriven{
/**
*
*/
private static final long serialVersionUID = 1L;
private Students student=new Students();
//查询所有学生
public String query(){
StudentsDao sdao=new StudentsDaoImpl();
List students=sdao.queryAllStudents();
if(students!=null&&students.size()>0){
session.setAttribute("students_list", students);
}else{
session.setAttribute("students_list", null);
}
return "query_success";
}
//删除学生
public String delete(){
StudentsDao sdao=new StudentsDaoImpl();
String sid=request.getParameter("sid");
sdao.deleteStudentsBySid(sid);
return "delete_success";
}
//添加学生
public String add(){
StudentsDao sdao=new StudentsDaoImpl();
sdao.addStudents(student);
return "add_success";
}
//获得要修改的学生的信息
public String modify(){
StudentsDao sdao=new StudentsDaoImpl();
Students stu=sdao.queryStudentsBySid(request.getParameter("sid"));
session.setAttribute("modify_students", stu);
return "student_modify";
}
//修改学生信息
public String update(){
StudentsDao sdao=new StudentsDaoImpl();
sdao.updateStudent(student);
return "update_success";
}
public Students getModel() {
return student;
}
} struct.xml
/users/Users_login_success.jsp
/users/Users_login.jsp
/users/Users_login.jsp
/users/Users_login.jsp
/students/Students_query_success.jsp
Students_query
/students/Students_add_success.jsp
/students/Students_modify.jsp
/students/Students_modify_success.jsp
struct.xml.Flow
jsp代码就不发了。
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